I did want a number plate too, finally gave up the idea ;I still think the MAS look realy good.
I actualy gave up the idea when i saw this bike
Here is a photoshop version of mine, i placed an order at a local sticker shop to get it done. I'm geting it end of week.
It's going to be cheaper than geting a side plate.
BUT if you realy want a number plate , make sure you check this seller on Ebay: